* {
    margin: 0;
    padding: 0;
}
.panel {
    width: 350px;
    height: 500px;
    margin: 0 auto;
    border: 3px solid #cecece;
    border-radius: 50px;
    background-color: rgb(75,86,121);
}
.panel > .box {
    width: 280px;
    height: 400px;
    margin: 50px auto;
    display: grid;
    gap: 20px 20px;
    grid-template-rows: repeat(5,1fr);
    grid-template-columns: repeat(4,1fr);
}
.box > div > input{
    font-size: 25px;
    text-align: center;
    width: 100%;
    line-height: 64px;
    border-radius: 50%;
    background-color: rgb(215,171,186);
    box-shadow: 0 3px 3px #000;
}
.box > .r1r2c2c5{
    height: 50px;
    grid-row: 1/2;
    grid-column: 2/5;
    border-radius: 25px;
    box-shadow: 0 0 0;
    background-color: rgb(90,175,74);
}

.opretion_bgc input:nth-of-type(1) {
    background-color: rgb(248,164,0);
}
.ac_sum input:nth-of-type(1) {
    background-color: #fff;
}